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JC 34

Sulzer submersible drainage center-line pump JC 34

The slim design of the submersible drainage center-line pump JC 34 makes it perfect for applications with limited installation space. The pump is ideal for pumping water and dirty water mixed with light abrasives. 50 Hz: head max 34 meters, flow max 16 l/s. 60 Hz: head max 47 meters (155 feet), flow max 18.5 l/s (294 gpm).


Electric submersible pump. Maximum submergence: 20 m. Protection class IP 68.
Max temperature of pumped medium at max power input and continuous duty 40 ºC.
Max medium density 1100 kg/m3. pH of the pumped medium 5-8.
Strainer hole: 8 x 33 mm.
Max number of starts 30/hour.

Electric motor

3-phase squirrel-cage induction motor, 50 Hz:

Service factor 1.1. Class F insulation.
Motor rating P2: 3.0 kW.
Speed: 2850 rpm.D.O.L. start with built-in contactor.

Voltage, V 230 400 500
Nominal current, A 12.7 7.3 5.5



Power cable

20 m type H07RN8-F (standard cable):
4 x 1.5 sq.mm.

20 m type NSSHÖU.../3E (heavy duty cable):

Motor protection

Built-in thermal switches in the stator windings (140ºC, ±5), connected to built-in contactor.

Shaft seal

Double mechanical seal in oil bath.
Primary seal: Silicon carbide on silicon carbide.
Secondary seal: Stainless steel on antimony treated carbon.


Upper bearing: Single-row deep groove ball bearing.
Lower bearing: Double angular contact ball bearing.

Discharge connections

2" (standard HD), 3" (standard ND) hose connections.
2", 3" G/B.S.P. threaded connections.


31 kg (without cable)

Options and accessories

Zinc anodes.
Starter and control units.
Automatic level control unit. 
Repair kit.
Discharge connection accessories and hose.


Description Material EN ASTM
Castings Aluminium EN 1706:AC-43100 ASTM AlSi10mg
Casing Aluminium AW5754 ASTM AA 5754
Fasteners Stainless steel 10088:X5CrNi18-10 (1.4301) AISI 304
Shaft Stainless steel 10088:X20Cr13 (1.4021) AISI 420
Impeller Hardened chrome steel 10088:X20Cr13 (1.4028) AISI 420
Wear parts / O-rings Nitrile rubber